# JEE 2015 Problem(Open discussion)

Here is a problem of chemistry from JEE 2015 Paper 1

You can have a look at Q37

It talks about reduction of Ferric ions to ferrous by using Hydrogen peroxide

I Was not able to get the answer to the problem . hence i searched youtube and got a nice practical explanation

according to the practical done no choice is correct but unfortunately in official keys answer was Given as AB.

Note by Prakhar Bindal
4 years ago

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- 4 years ago

Yes , maybe the answer key is wrong ! they did'nt consider the practical view point and relieved only on the theoretical view point , BUT , also i have seen in some books earlier giving the answer as AB , so nothing can be done now , CONCLUSION : you should read more books !

Based on what percentage of reagents were used in that video usually in paper rxn with conc H2SO4 means 100% of it but in lab even conc consists ard 50% diluted H2SO4 to prevent 3rd degree burn but its chemistry so can't say confidently.

- 4 years ago

But even by theory i found a satisfactory explanation why the answer should be cd Rather

- 4 years ago

why not close the discussion then , if your doubt is resolved !

Sorry i meant CD! Typo! . i found a nice explanation why CD Should be answer rather

- 4 years ago